102
[PE2] bpdu-tunnel tunnel-dmac 0100-0ccd-cdd0
# Create VLAN 2 and assign GigabitEthernet 1/0/2 to VLAN 2.
[PE2] vlan 2
[PE2-vlan2] quit
[PE2] interface gigabitethernet 1/0/2
[PE2-GigabitEthernet1/0/2] port access vlan 2
# Disable STP on GigabitEthernet 1/0/2, and then enable BPDU tunneling for STP on it.
[PE2-GigabitEthernet1/0/2] undo stp enable
[PE2-GigabitEthernet1/0/2] bpdu-tunnel dot1q stp
BPDU tunneling for PVST configuration example
Network requirements
As shown in Figure 33:
• CE 1 and CE 2 are edges devices on the geographically dispersed network of User A. PE 1 and PE
2 are edge devices on the service provider network.
• All ports that connect service provider devices and customer devices and those that interconnect
service provider devices are trunk ports and allow packets of any VLAN to pass through.
• PVST is enabled for VLANs 1 through 4094 on User A’s network.
After the configuration, CE 1 and CE 2 implement consistent PVST calculation across the service provider
network, and that the destination multicast MAC address carried in BPDUs is 0x0100-0CCD-CDD0.
Figure 33 Network diagram for configuring BPDU tunneling for PVST
Configuration procedure
1. Configuration on PE 1
# Configure the destination multicast MAC address for BPDUs as 0x0100-0CCD-CDD0.
<PE1> system-view
[PE1] bpdu-tunnel tunnel-dmac 0100-0ccd-cdd0
# Configure GigabitEthernet 1/0/1 as a trunk port and assign it to all VLANs.
[PE1] interface gigabitethernet 1/0/1
[PE1-GigabitEthernet1/0/1] port link-type trunk
[PE1-GigabitEthernet1/0/1] port trunk permit vlan all
# Disable STP on GigabitEthernet 1/0/1, and then enable BPDU tunneling for STP and PVST on it.
[PE1-GigabitEthernet1/0/1] undo stp enable
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